The AM neck is full and rounded. Modern in the broader sense. Definetly on the hotter side which gives it a nicely fluid feel. The cleans have that modern ambient feel and are suprisingly nice given the AM is know for the brutalz. Under gain it really shines. I always say that is has that early Dream Theater (Awake era) mojo and is also brilliant for Satriani type stuff. A liquid shred champ if you will.
All in all it complements the bridge, but does not share as much DNA as one would expect.
I canīt say too much about how it compares to the CS, but I think it is more modern and fuller.